BOTANIC MATERIA MEDICA, 365 
ural order Aurantiacee. The mode of extract: 
ing this volatile oil from the epicarp of the fruit 
is by expression or scarification, as with orange 
oil, It is chiefly prepared in Sicily, at Reggio, 
Mentone, and Nice; it is also prepared in the 
States of Florida and California, U. S.; but the 
chief supply is from Europe. The oil is of a 
pale yellow color; odor, like the fruit; taste, 
warm, aromatic, and bitter; specific gravity, 
0.85. By age and exposure it deposits a crys- 
talline fat; it absorbs about one-half its weight 
of acid hydrochloric in gaseous form, and is 
converted into a crystalline substance, identical 
to the artificial camphor produced by the ac- 
tion of acid hydrochloric on turpentine oil. The 
oil of lemon consists of several hydrocarbons, 
turpentine, terpene, or citrene, hesperidene, 
cymene, and a compound ether. See Dispensa- 
tory, page 941, 17th ed. Oil of lemon is rarely 
if ever given alone, although it has the medical 
properties of the aromatic oils, but enters as an 
ingredient into the following officinal prepara- 
tions : SPIRITUS AMMONIZ AROMATICUS, SYRUPUS LI- 
MONIS, SYRUPUS ACIDI CITRICI, SPIRITUS LIMONIS 
and the sPIRITUS ODORATUS, 
Very seldom found perfectly free from adul- 
terants. One ounce of alcohol to the pound 
preserves it. 
Oleum Menthz Piperitz, Peppermint Oil, 
distilled from the fresh flowering tops of the 
herb Menthz Piperite.—Natural order Labia- 
te. The best oil is prepared at Hitchin, or 
Mitcham, England, and by Messrs. Hotchkiss 
& Co., although we get a good oil from the 
distilleries of Michigan, Ohio, and New York, 
